Tool for applying electrical and telephone tip terminals



Feb. 13, 1945. ROSENTHAL 2,369,180

TooL Fon APISLYING ELECTRICAL AND TELEPHONE TIP TERMINALS Filed Dec. 15,1942 3 sheets-sheet 1 glu AvA 2 9 a Z JNVENTOR. fr @e0/w @0MM/c5616,

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Feb. 13, 1945. l.. Rosi-:NTHAL 2,369,180

TooL FOR APPLYING ELECTRICAL AND TELEPHONE TIP TERMINALS Filed Dec. 15.1942 I5 Sheets-Sheet 2 T T-:14; TE- 5 INVENToR,

Feb. l13, 1945. L. ROSENTHAL 2,369,180

TOOL FOR APPLYING ELECTRICAL AND TELEPHONE 'IVIP TERMINLS' Filed Deo.l`5, 1942 3 Sheets-Sheei'I 3 INVEN TOR. @aow voa/wba BY i A TI'RVF Y y;

Patented Feb. 13, 1945 Toor. Foa APPLYING ELECTRICAL AND'. TELEPHONE'rrr TERMINALS i `Leon Rosenthal', Baltimore, Md., assignor to GuildiManufacturing. Company, Baltimore, Md., a partnershipv composed ofIrving Katz and AlbertD. `Groldmamboth of Baltimore, Md.. v

Application December 15, 1942,v Serial No. 469,109

ci. :s1-15) `8: Claims.

My invention relateslv broadlyto tools and more particularlyto a toolfor applying sleeve-like terminals to electrical conductors:

One'y ofthe objects of' myinvention is to provide a construction ofltool for rapidly applying ing my invention;V Fig. 2 isI an end view of;the tool shown in Fig. 1; Fig. 3y is'an enlarged frag-` mentary'verticalsectional view showing parts of the tool in section and parts" ofthe-tool in ele`` vation, the tool beinggshown in; a position pre-4pared to'receive the terminal capped'endof in sulated wire forapplication of the terminal to the end of the insulated Wire; Fig. 4 isa view similar to the View illustratedin Fig. 3 showing" the terminalcapped end of an insulated w1r`e introduced into' the socket between theradially disposed knives; Fig. 5 isa View of the tool' similar to theviews shown in Figs. 3v and 4 but illustrat-v ing theparts shiftedtooperative 'positionfor lancing the material'ofthe sleeveeliketerminali for establishing electrical connection between the sleeve-liketerminal and the electrical con-- 1 ductor and curling the edge of'V thesleeve-like electrical?conductors-inI which' amultiplicity-ofknivesvareA arranged in radial' positionsv between whichl anelectrical*conductor havingI asleevelike cap or terminal?slippedf-over'the; end thereof may be introducedl Wlth-'yieldable meansfor moving the knives inwardly@ tof-positions piercing the material ofthe sleeve-likeE member 'for displacing the material.r thereofV toly atposition establishing electrical. connection with' the; conductor; theknives` being: thereaiterret'ractible. for rreleasing the-electricalconductor: with the terminal.' applied thereto'. l

.further object-.ofimy' invention is` to'l provide terminal'inwardly`for providing afirm mechani-A cal connection betweenthe-r sleeve-liketerminali and the-insulationy of'tl'ieelectric'ali` conductor; Fig. 6`is a transverse sectional viewztakenxon line 6`6-of Fig.y 3; Fig. 71s altransverse sectional-'view taken on line --l of Fig. 3; Fig-.- 8 isatransverse sectionalview "taken on l'ine.18-8` ofrFig'.- 3", all of theparts'in said Figs. 6; 7i ande-being' illustrated a. tool` whichoperates: to both establish.- electrical connection. between. an's1eeve;.likea terminal and tli'ef conductiveistr-.andsz of.. aniinsulated. wire-f, and also;v curl; or roll-inwardly'theiecircular end'ofl the sleeve@ to; providefa'. tight;v mechanical. connection between:Vthe sleeve and. the insulated wire.N

A- still;y furtherl object of "myfinventiorr isv` to. pro:- vide; attool for. applying.sleeve-likef-terminalszto insulated; electrical-1,conductors whereith'e.: tool includes a means.;r for bot-h' dancing;and..-curling: the sleeve withlrespectsto the insulated electricalycon.- ducton for establishing: bothk atrm; mechanical connection.between.- thee-sleeveandi the insulation of.' the;` conductor.- andgan.` electrical. connection between the sleeve and the electrical:`conductor through..- the.insulation thereof..

Other: and. further. objects of. myinvention.- reside in.. vaconstructionl of; electrical terminal applying` tool-,assetiorth-.morefimly in thefspeci- 'cationhereinafter. following,by-reference; to the accompanyingpdrawinghinwhicli:

lirurefl-y isairontelevation of!` thea-tool-.embodyin positionpreparatory= fory performing' a terminal' applying operation;A Fig..- 9?is a. transverse: sectional viewtaken on1line'9`i-9`of Fig:5"illu`strating the knives displaced to a pQsitiori'in:- whichy the`terminal applying operationis'performed; Fig.

10isk a side elevational View ofthevcollet chuck through whichtheterminalf capped end of the wire is introduced; Fig'.` llfis avertical' sectional view througlithe: collet chuck'rof 1'0 taken on.line I I-I li of Fig. 12;. Fig.. l2 is altransversesectional View.ythrough"` the colletxchuclcfof Fig.. 10 online l2--I 2; thereof; Fig: 13ai transverse; sectional View taken Online .-l'31`- lf3' of Fig. 3i and.illustrata ing the connection of the-.actuating means' with theoperating mechanismv of thev tool; Fig. 14fisa perspective view of onekof.. the.' knives employed infthe too-1. for lanCing: the. material of;thef sleeve'- like terminali into kpositioni for' establishingrelec'-trical connection with they electrical conductor through the insulationof. the.- conductor; Fig. 15 is a fragmentary portion of the end of aninsulated conducto-r. showing asleeve-liketerminal applied thereto inaccordance; with my invention.; Fig, 16 is an enlarged fragmentary View.ofthe knives in position preparatory for a lancing operationy and,showing the .sleeve-like .terminalv centered 4within the :spring colletchuck. preparatory for a curlingcperation;,andFig 17. isaview-simi.-VlarI to. the. View.` shown-.in 16 but. illustrating the relativeposition of the parts when both the l to the ends of electricalconductors.

however that the mechanism of my invention islancing and curlingoperations have been completed. y

I have illustrated my invention as embodied in a hand tool for applyingsleeve-like members The 'fact applied to a hand tool does not precludethe use of the same mechanism in a machine which may be hand or footoperated or motor operated for applying the sleeve-like terminals to theendsv of electrical conductors. Accordingly, throughout trated at Ila, acylindrical portion of smaller section shown at IIb, a furthercylindrical por# tion of still smaller section shown at Ilc andfrusto-conical end sections illustrated at I Idl and' lle. The section IIc of the chuck provides an internal shoulder against which :the rawperipheral edge of the sleeve-like terminal I abuts as the plunger 3forces the terminal against the shoulder ofthe section IIc from theposition' illustrated in Fig. 16 tothe position illustrated v in Fig.17. The shoulder of section `I Ic is reprethespecilcation I desire thatit be understood y f I that the hand tool shown is .illustrative of oneof the uses of my invention and that the actuation of the part's of thedevice may be vperformed by any manual or automatically operated ma-ychine.

sented at Il? and is" so curved that asthe raw edge of sleeve I5 isforcedagainst the shoulder,

the material of sleeve I5 is forced to curl inwardly Y to form asubstantially moisture-tight connection with the insulation material I'Iof the electrical conductor I6 as ,shown in Fig. 17. The piercingfoperation which is commenced by entry ofthe Referring 'to the drawingsin detail, reference shown. A sleeve 2 is telescopically disposed withinthe shell I and is adapted to be reciprocated therein for controllingthe mechanism of the tool. The sleeve 2 has an end lug 2a project- 1 ingtherefromapertured at 2b to allow the entry of securing member 2c. Thesecuring member 2c may be avscrew threaded bolt having a fasten- I ingvnut thereon or a rivet or other transverse member.

The transverse member 2c passes through the coacting interleavedportions of the l actuating'members I2a andjIZb. Portions of actuatingmember I2a shown at I2c and I2cl overlap as shown and are interconnectedby the transversely extending member 2c. The actuating members I2a and|21) are each provided with pins 8a and 8b displaced from the transversemember 2c and which form pivotal connections for links 5o, and 5b whichare pivotally connected by means of pins 9a and 9b with the outstruckhollow. side portions la and 1b. The action of this linkage is such'thatas actuating members I 2a and' I 2b arevbrought together from the normalas illustrated inFig. 5v. y p

The interior of the sleeve v2 has internal bores of different diametersas represented at 2d and 2e. In the portion of the sleeve 2d theexpansive coil spring 'IY is housed while in the portion 2e of thesleeve the coil spring 6 and the balance of the mechanism is housed. Thechange in internal y diameter of the bore of sleeve 2 takes place alonga transverse section illustrated at 2f. Just above v the shoulder thusformed the plunger 3 is normally `yieldingly supported on coil spring 1.The

plunger 3 is a precisionmachined element having an end flange 3a.thereon which is seated upon the end of coil spring 1. The coil spring 6is concentrically disposed about the cylindrical body portion of theplunger 3 and is seated against the head 3a at one end and against theend of the cylindrical collet chuck member II. That is v to say, coilspring forms a continuously expansive means disposed between the headformed by iiange 3a on plunger 3 and thevend of the cylindrical colletchuck member I I.

The cylindrical collet chuck member I I is shown more clearly in Figs.10, 11 and 12 and includes an inner borel of varying internal diameters,that is, a cylindrical portion of uniform section illuspoints of theknives into the sleeve-like terminal I5 as will be hereinaftervdescribedis'completed as a compositek shearing andlancing operation asrepresented in Fig. 17 for completing electrical connection between thematerial of sleeve rI5 and the wire I6. I 1

The upper end of the colletchuck 'member is provided with an annularshoulder I If having an angularly inclined cylindrical surface Ilgtheref of. The projecting end of the collet chuck member is representedat vvvIIh. The collet chuck member is slotted throughoutsubstantiallyrthe entire length thereof in the positions Aillustrated atIIz' whereby the portions of the collet chuck member are renderedresilient andare adapted to be moved toward each other toa collapsedposition or to spring outwardly away from each other to normal position.The slots 'lli thus formed are of lsuiicient lwidth to permit theangular movement of the knives shown at 4a, 4b and 6c therethrough.

The construction of the knives clearly in Fig. 14, from which it will beseen that one end of each knife is'rounded as represented at lla.andtapered toward the opposite end as represented at Iab A cam shapedlug lla" extends from the. tapered portion da of the knife. The portionAa" of the knife has a recessl av formed therein of suicient length tospan the annular head 3b of the plunger 3 as shown in Figs. 3, 4 and 5.The cam shaped lug auf". is-

proportioned to t wholly within the annular recess 3c of'plunger 3 whenthe knives are moved inwardly to pierce the material of the sleeveliketerminal represented at I 5 in Fig. 15. The knives are each providedwith astraight face 4V from which extends the piercing or lancing knifeblade 4V1. The piercing or lancing knifev blade IVI is of isoscelesformation having a triangular shaped face IV1I terminating in the pointAof the piercing knife blade 4W. This triangular'shaped face lances orYshears `the material of the sleevelike terminal I5 as the point of thepiercing or lancing blade 4V1 shears the material of the sleeve-liketerminal I5 as illustrated rin Figs. 5 and 17, thereby establishing anelectrical connection between the electrical conductor I6 and thesleeve-like terminal I 5 through the insulation material Il.

The material of `the metallic sleevef-like terminal I5 is pierced,sheared and bent Ainwardly from the cylindrical portion of thesleeve-like terminal I5 as represented at I8 vin Figs.5, 15 and 17. Thisoperation is effected by the composite movement of plunger 3 axiallykwithin the spring collet chuck II and the'radial-'inward movement isshown more Vhood" formed byu the fshell I.

ori the;y knives-fundercontrol ofi-f the.: actuatingmeans- I-Z'aff-andi-|2215` That isftorsay; the action of" thel actuating. means Ii2^av and-|227: ten'dsf to for-oei plungerr 32 througlr` the springt collet chuckfromthe-position: illustrated inwlig.l 16 to the position. shownf in-Fig. .1:7 Asiftl-iel knives-pierce the.Y materialfo the sleeve-liketerminala I 5i there isax movement of* plunger` 3i toward theshoulder-I'I'q" of the-f collet chuck suclithatitlie curling-op"- eration toforcethe-material of." the sleeve-like terminal I5 inwardly to form-amechanica-Leon nection` withthe insulation: material I-'Ifis efl'ectedand alsothe-sleeve is moved7 again-stithe knives-t0 effect a: lancingxorshearing-f operationv which for-mst'lie conductingtongues1 I8. Theconducts ing tonguesthus formed establish:` an, electrical circuitbetween` the-electrical. conductorand the sleeve-like-terminalf I L5tionA 4-Vmiwhicl1i-` in normal f position illustrated in Figs'. 3and4-fpro-ject-, under-#tha action of springs 6 and" 'I-, to positionsagainst the`r insidev` of-V the The springs-I 6 and 1^ tendingtoecontinuously force the knives-to an openposition; pressy the knivestothepositions illustrated in` Fig. 31 where the rear face of -each knifeyrepresented* at 41X is forced against' the inside ofthebore-2e of thesleeve- 2. In thisposition-` the cam-likeL ends-Wmfproject beyond' theperipheraledge of the sleeve- `2 with the knives 4V!" retracted Vbetweenslots II. In thisretracted position the end of/ the -finsulatedconductorwith the terminalv sleeve.V I5-f slipped` thereon maybeintroduced-betweenthe-knives preparatoryto the terminalapplying-operation; Inthe form of the terminal illust-rated in-Fig';15";` a' tip- IQextends from the sleeve- I 51. The-plunger 3;'isprovided witha complementary; shaped-A boreA for receivingthe tip I 9Sandallowing-'the' sleeve-likeL portion ofthe terminal to' be located.dinregistry. position with the-several kniveskVIl Asythedevice is movedtothepositionillustrated' in- Fig4-`, theknives comm-enceto engage thesleeve-like terminal IE5 Asthis operation-iscontinued-'tlie s knivespierceY the--sleeve-li-keterminal I 5-*ashere;-

t'oforeexplained; The-operation thereafter isa composite shearing andLlancing movement brought aboutv by--t-he: axial-f move-ment of plunger3' and' theradial'jmovement. ofthe'knives. The material ofy thesleeveelike terminal is.` actually moved-againstzthe knives-asthe knivesmoveinward-ly so that thelancingj'or,l shearing-operation is performed"lquickly.- Thesmall triangular shaped portions of the' material of thesleeve-like terminal' I5'- are alsov bent inwardly; by thissameoperation as; illustratedin Fig; lilyv to establish electricalconnection with the strandstoffjthe wire I I throughf the-'insulationI1. The,A extent. to which the raw-e1dgfe ofthe sleeve-like terminal" iscurled into the material` of the insulation on the conductor isdetermined by the shape ofi the shoulder Ila; on.thespring collet chuckand'the proportionsofthe interior of the spring collet chuck withrespect to the length ofthe terminal sleeve. 1

The actuating means I 2a and I2b are employed to effect the foregoingcollapsing operation. When the actuating means is released the springs 6and 'I force the knives to retracted positions illustrated in Fig. 3preparatory for a repeat operation.

As heretofore explained, in lieu of the hand actuated means I2a and I2b,I may provide foot actuatng means or motor drive means for effecting aterminal applying operation. v

- limiting sense.

' I-havee shown-myrinventionf iny one: off its-pre:A frrediembodiments-for applying af cylir'i'dri'ca'l4 sleeve-likev-tipf-orterminali tothe endE of an elec tri-cal conductor. It" will beunderstood' thatvariousfformsof'terminals-may be'applied-to the endsofan electrical conductor in-r` accordance witl'lvmyl invention.Ill'rat-` is.' a flaty terminalA having an eyelet--orfa yokeeshape'dendr with a sleeve-like portion formed integral therewith` may: beapplied to-the vend'fof an electrical conductor inI accordanceewith myinvention. Moreover a terminalof square or` rectangularsectionlv may beapplied to the-end'of the-conductor in lieu-oi' the-cylindricalsleeve-like terminal illustrated-fY herein. The toolo-ffmy-inventionis-also applicable to terminalsof deformedf or split sectionconstructionas distinguished from the solidicylindr-icalsleeve terminalvillustratediherein.' I may also vary-the number ork-ni'veswhichcareemployed in the-tool" and it--i's to begund'erstoodi that theillustrations-herein are to--be-erega-rded in the broadsensef'and not-inthe- Wliile-I`have--explaine-dfmy invention in certain preferredembodiments, I realize that modifications maybemade and If desirethatgitbe understoodthat-no limitations upon my--i'nventionare intendedotherthanmay beimposed by the scopeofthe-appended claims.

Wha-t I- claim as --new' and'desire to secureA by Letters Patent of-theUnitedStates; iszasfollows-L 1;- Mechanism for applying terminals toelectricalconductors comprisingashell havinga restricted'opening`in-one-end thereofgasleeve movjab1'e-into`and outofsaid-jshell; aspring-,collet chuckmember yieldinglyfsupported intheendof said sleeve,a'plurality-of radially movableknives displace said material inwardlyinto electrical connection with said? electrical conductor through theinsulation thereof, and means for applying pressure tothe aforesaid'means for-movingv said kniVcs-jinwardl'ytoward the terminal encasedeiectrical'conductor.- Y

2; iA' device for-applying sleeve-like members to insulatedelectrica-wiret and' establishing electrical connection therewith-icomprising -a socket mem-. berr having a multiplicity of separableportions normally-spaced for-permitting the insertion of a terminalvsleeve cappedinsulatedwire therebeftween', knife membersrockably-mounted between said 'separable' portions, said knife-membershaving" bla-des thereonr for` piercing thematerial of theterminal-sleeveand displacing material from said terminal.' sleeveinwardly forestablishing electricaly connection wthgsaid wire, means-for applyingpressure-tosaidknife members-for movingjsaidlkniffe-membersinwardlytoward said tere minalsleeve-y and--spring--means--for retractingsaidknife members.

3. A device for applying sleeve-like members to insulated electric wireand establishing electrical connection therewith comprising a socketmember having a multiplicity of separable portions normally spaced forpermitting the insertion of4 a terminal sleeve capped insulated wiretherebetween, knife members rockably mountedbetween said separableportions, said knife members having blades of isosceles shape forpiercing and displacing triangular portions of the material of saidterminal sleeve through the insulation f of the insulatedelectricalconductor and into electrical connection with said'wire, means for`applying pressure to said knife members for moving said knife membersinwardly toward said terminal sleeve, and coil springs for retractingsaid knife members for releasing said conductor with the terminal sleeveapplied thereon.

4. A device for app-lying sleeve-like members to insulated-electric wireand establishing electrical connection therewith comprising a socketmember having a multiplicity of resiliently mounted portions with radialslots therebetween, knife members angularlyA shiftable through theradial slots of said socket member, means for angularly displacing saidknife members through the slots in said socket member for piercing thematerial of a, terminal sleeve inserted into said socket and displacingportions of said material into electrical connection with said electricwire, and means for applying force to the aforesaid means forl member isshifted with respect to the socketk member for piercing the material ofa sle'eve-like terminal carried by an electrical conductor in-` sertablebetween said knives inretracted position with the raw edge of thesleeve-like terminal enveloped by the internal shoulder formed by saidcollet chuck for displacing the material of the sleeve-like terminalinto electrical connection with the insulated electrical conductor andcurl` ing the raw edge of said sleeve-like terminal into connection withthe insulation of said insulated electrical conductor, said knives beingretractible from said engaging position when said shell is shifted withrespect to said socket member, and means for applying force to saidshell member for displacingr said collet chuck with respect to saidsocket memberfOr moving said knives inwardly` toward said sleeve-liketerminal. y

' 5. A device for applying sleeve-like members to insulated electricalconductors and establishing electrical connection therewith comprising acy` lindrical socket member, a shell member slidable over saidcylindrical socket member, a pair of coil springs disposed in saidsocket member, a plunger having a headed end yieldingly supported by oneof said coil springs, a collet chuck slidably disposed over saidplunger, saidcollet chuck having longitudinally extending portions withradially disposed Aslots therebetween, knives rockably mounted in theradially disposed slots, said other.

coil spring being disposed between the headed end of said plunger andsaid collet chuck, said knives being movable radially inwardly forpiercing the cylindrical sleeve-like member carried by the electricallyinsulated conductor inserted through the open end of said collet chuckfor establishing connection between the material of said sleeve-likemember and the electrical conductor, and means for applying .pressure tosaid vknives for moving said knives inwardly toward said rsleeve-likemember.

7. A device lfor applying sleeve-like members to insulated electric wireand establishing electrical connection therewith comprising a socketmember having a multiplicity of` resiliently mounted portions withradial slots therebetween,

moved for curling said sleeve inwardly against the insulation of theelectric wire, and means for angularly moving said knife memberslthrough the slots in said socket member for piercing and lancing thematerial ofthe terminal sleeve and establishing connection between thematerial of the terminal sleeve and the electric wire.

8. A device for applying sleeve-like members to insulated electric wireand establishing electrical connection therewith comprising a socketmember having a multiplicity of resiliently mounted portions with radialslotstherebetween,

knife members angularly shiftable between the radial slots of saidsocket member, a plunger` axially movable through said socket member andoperative kto form a support for the sleeve-like capped end of aninsulated electric wire introduced through the socket member, means forcompressing the end 'of said 'socket member against the insulation ofthe electric wire introduced therein in a position displaced from theraw edge ofthe sleeve-like terminal carried thereon, an annular shoulderformed interiorly of said socket member, meansfor displacing saidplunger for moving the sleeve-likel `terminal thereon to a position inwhich the raw edge of the sleevelike terminal is engaged by the saidshoulder and rolled inwardly tov grip the insulation .of the electricwire, and means for moving said knife meinbers radially inward forpiercing and lancing the material of said sleeve-like terminal forestablishing connection betweenthe. sleeve-like terminal and theelectric wirethrough the insulation thereof. c

LEON ROSENTHAL.

